CN203177777U - Cylinder radius measuring instrument - Google Patents
Cylinder radius measuring instrument Download PDFInfo
- Publication number
- CN203177777U CN203177777U CN 201220755570 CN201220755570U CN203177777U CN 203177777 U CN203177777 U CN 203177777U CN 201220755570 CN201220755570 CN 201220755570 CN 201220755570 U CN201220755570 U CN 201220755570U CN 203177777 U CN203177777 U CN 203177777U
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- CN
- China
- Prior art keywords
- dial
- sounding rod
- support
- index dial
- measuring instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a cylinder radius measuring instrument which comprises a support, an arc-shaped contact, a measuring bar and a dial. The arc-shaped contact, the measuring bar and the dial are installed on the support. The measuring bar is disposed in the middle of the arc-shaped contact. The measuring bar is engaged with a gear on the dial. The dial is provided with a pointer and a scale. The lower end of the measuring bar is provided with an upper tooth bar which is engaged with the gear on the dial. The measuring bar extends into the support through a circular pipe on the support. The measuring bar is sleeved with a spring. Based on math principles and on the precondition of not changing the position of a detected cylinder, radius of a cylinder which is not easily measured by a traditional instrument can be obtained through angle changes on the dial. In addition, the cylinder radius measuring instrument has advantages of high accuracy and simple structure, is convenient to use, can be used for measurement anytime and anywhere, and is easy to carry and maintain.
Description
Technical field
The utility model relates to the surveying instrument technical field, is specifically related to a kind of for measuring sector crosssection cylinder or the radius instrument than the radius of big column.
Background technology
All can need to measure radius or the diameter of cylinder under many circumstances.In the past, adopt slide calliper rule to measure the radius of cylinder usually, method is after blocking right cylinder to be measured with slide calliper rule earlier, directly read diameter from ruler, yet, be fan-shaped right cylinder or the bigger right cylinder of radius for cross section very, its radius or diameter just have been not easy to record accurately the result.There are shortcomings such as complex structure, expensive, operation inconvenience usually in the instrument that can survey this type of right cylinder radius or diameter at present.
The utility model content
At the deficiencies in the prior art, the utility model provide a kind of simple in structure, measure cylindrical radius measuring instrument easily.
The purpose of this utility model realizes by following technological means: a kind of cylindrical radius measuring instrument, it is characterized in that: comprise support, arcuate shaped contacts sounding rod and index dial, arcuate shaped contacts, sounding rod and index dial are rack-mount, sounding rod is located at the centre of arcuate shaped contacts, sounding rod is connected with a joggle with the gear that is located on the index dial, and index dial is provided with pointer and scale.
Further, be provided with upper rack in the lower end of sounding rod, the gear on this tooth bar and the index dial is connected with a joggle, and tooth bar athletic meeting driven gear rotates.
Further, sounding rod stretches into the inside of support by the pipe on the support.
Further, be arranged with spring on the sounding rod, when spring is in the nature straight configuration, the pointed start index of index dial.
Final result calculates according to following formula and obtains:
R＝(3.14159*X*R
1/360)+(90*L
2/3.14159*X*R
1)
Wherein, R
1Radius for the instrument internal gear;
R is tested cylindrical radius;
L is half of distance between the arcuate shaped contacts;
X is the changing value of index dial upper angle.
The utility model is based on mathematical principle, under the prerequisite that does not change measured circle cylinder position, variation by the index dial upper angle, can obtain the cylindrical radius that traditional instrument is difficult for measurement, and degree of accuracy height, simple in structure, easy to use, can also measure whenever and wherever possible, be easy to carry about with one and keep in repair.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure, 1 is support, and 2 is arcuate shaped contacts, and 3 is sounding rod, and 4 is spring, and 5 is gear, and 6 is pointer, and 7 is index dial.
Embodiment
In the present embodiment, with reference to Fig. 1, described cylindrical radius measuring instrument, comprise support 1, arcuate shaped contacts 2, sounding rod 3 and index dial 7, arcuate shaped contacts 2, sounding rod 3 and index dial 7 are installed on the support 1, sounding rod 3 is located at the centre of arcuate shaped contacts 2, and sounding rod 3 is connected with a joggle with the gear 5 that is located on the index dial 7, and index dial 7 is provided with pointer 6 and scale.
Lower end at sounding rod 3 is provided with upper rack, and the gear 5 on this tooth bar and the index dial 7 is connected with a joggle, and tooth bar athletic meeting driven gear 5 rotates.
Sounding rod 3 stretches into the inside of support 1 by the pipe on the support 1.
Be arranged with spring 4 on the sounding rod 3, when spring 4 was in the nature straight configuration, the pointer 6 of index dial 7 pointed to start index (as 0 scale).
Make the top of the top of arcuate shaped contacts 2 and sounding rod 3 on same straight line, and equate that to sounding rod 3 axis distance sounding rod 3 is at the center of support 1; When sounding rod 3 is compressed, will rotate by driven gear 5, the pointer 6 that is fixed on the gear 5 will indicate a numerical value at index dial 7, and this numerical value is exactly tested cylindrical radius.After measuring end, sounding rod 3 can be got back to the origin-location under the effect of spring 4.
The above; it only is a part of embodiment of the present utility model; protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (4)
1. cylindrical radius measuring instrument, it is characterized in that: comprise support, arcuate shaped contacts, sounding rod and index dial, arcuate shaped contacts, sounding rod and index dial are rack-mount, sounding rod is located at the centre of arcuate shaped contacts, sounding rod is connected with a joggle with the gear that is located on the index dial, and index dial is provided with pointer and scale.
2. cylindrical radius measuring instrument according to claim 1, it is characterized in that: the lower end at sounding rod is provided with upper rack, and the gear on this tooth bar and the index dial is connected with a joggle.
3. cylindrical radius measuring instrument according to claim 1, it is characterized in that: sounding rod stretches into the inside of support by the pipe on the support.
4. cylindrical radius measuring instrument according to claim 1 is characterized in that: be arranged with spring on the sounding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220755570 CN203177777U (en) | 2012-12-31 | 2012-12-31 | Cylinder radius measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220755570 CN203177777U (en) | 2012-12-31 | 2012-12-31 | Cylinder radius measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203177777U true CN203177777U (en) | 2013-09-04 |
Family
ID=49074460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220755570 Expired - Fee Related CN203177777U (en) | 2012-12-31 | 2012-12-31 | Cylinder radius measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203177777U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438775A (en) * | 2013-09-09 | 2013-12-11 | 青岛特锐德电气股份有限公司 | Inner cavity measuring device and inner cavity measuring method |
| CN104441027A (en) * | 2014-11-07 | 2015-03-25 | 中烟摩迪(江门)纸业有限公司 | Feed amount detector |
| CN104501713A (en) * | 2014-12-26 | 2015-04-08 | 重庆新卓汇汽车净化器有限公司 | Gear and lever mechanism of electric detector for filter screens of purifiers |
-
2012
- 2012-12-31 CN CN 201220755570 patent/CN203177777U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438775A (en) * | 2013-09-09 | 2013-12-11 | 青岛特锐德电气股份有限公司 | Inner cavity measuring device and inner cavity measuring method |
| CN104441027A (en) * | 2014-11-07 | 2015-03-25 | 中烟摩迪(江门)纸业有限公司 | Feed amount detector |
| CN104501713A (en) * | 2014-12-26 | 2015-04-08 | 重庆新卓汇汽车净化器有限公司 | Gear and lever mechanism of electric detector for filter screens of purifiers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20131231 |